FPUS55 KBOU 190005 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 605 PM MDT Thu Jun 18 2026 COZ038>040-191200- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 51 to 59. East winds 10 to 15 mph, becoming north after midnight. .JUNETEENTH...Partly cloudy. Highs 83 to 89. Northeast winds 10 to 15 mph with gusts up to 35 mph. .FRIDAY NIGHT...Mostly clear. Lows 54 to 60. East winds 10 to 15 mph in the evening, becoming light. .SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 86 to 96. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows 54 to 60. .SUNDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 84 to 90. .SUNDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows 50 to 56. .MONDAY AND MONDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Highs 80 to 86. Lows 50 to 58. .TUESDAY...Partly cloudy. Highs 78 to 84. .TUESDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows 52 to 58. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 81 to 90. Lows 53 to 59. $$ COZ041-191200- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 50 to 56. South winds 15 to 25 mph with gusts up to 35 mph. .JUNETEENTH...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 82 to 88. Northwest winds 10 to 15 mph, becoming northeast in the afternoon. Chance of precipitation 20 percent. .FRIDAY NIGHT...Mostly clear. Slight chance of thunderstorms in the evening. Lows 52 to 58. Chance of precipitation 20 percent. .SATURDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 87 to 93. South winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Mostly clear. Lows in the 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 80 to 86. .SUNDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows near 50. .MONDAY...Showers likely and chance of thunderstorms. Highs 76 to 82. Chance of rain 70 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Lows 49 to 55. Highs in the mid 70s to lower 80s. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 50 to 56. .WEDNESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 79 to 85. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows 52 to 58. Highs 82 to 88. $$ COZ042>045-191200- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- Including Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows in the 50s. Southeast winds 10 to 20 mph with gusts up to 35 mph. .JUNETEENTH...Partly cloudy. Highs in the mid 80s to lower 90s. North winds 10 to 20 mph, becoming northeast in the afternoon. Gusts up to 30 mph. .FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. East winds 10 to 20 mph with gusts up to 30 mph. .SATURDAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs 89 to 95. Southeast winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the mid to upper 80s. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 50s. .MONDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the lower to mid 80s. .MONDAY NIGHT...Partly cloudy with a 50 percent chance of thunderstorms. Lows in the lower to mid 50s. .TUESDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs near 80. .TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows 51 to 57. Highs 82 to 90. $$ COZ046-047-191200- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, and Punkin Center 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows in the lower to mid 50s. South winds 15 to 25 mph with gusts up to 35 mph. .JUNETEENTH...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the mid 80s to lower 90s. South winds 10 to 15 mph with gusts up to 30 mph, becoming east with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows in the 50s. Southeast winds 10 to 15 mph with gusts up to 20 mph. Chance of precipitation 20 percent. .SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the lower to mid 90s. South winds 10 to 20 mph with gusts up to 30 mph. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the 50s. Northeast winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the mid to upper 80s. .SUNDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows near 50. .MONDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs near 80. .MONDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows near 50. .TUESDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs near 80. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the lower to mid 50s. Highs in the lower to mid 80s. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower to mid 50s. Highs in the mid to upper 80s. $$ COZ048>051-191200- Logan County-Washington County-Sedgwick County-Phillips County- Including Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows in the mid 50s. Southeast winds 15 to 25 mph with gusts up to 35 mph. .JUNETEENTH...Partly cloudy. Highs in the mid 80s to lower 90s. Southwest winds 10 to 15 mph, becoming northeast in the afternoon. .FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows in the mid 50s. East winds 20 to 25 mph, becoming southeast 10 to 15 mph after midnight. Chance of precipitation 10 percent. .SATURDAY...Showers likely and chance of thunderstorms. Highs 85 to 93. Southeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 60 percent. .SATURDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 35 mph. .SUNDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 81 to 87. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 50s. .MONDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 77 to 83. .MONDAY NIGHT...Showers likely and chance of thunderstorms. Lows in the lower 50s. Chance of rain 60 percent. .TUESDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs 75 to 81. .TUESDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 77 to 83. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Lows in the mid 50s. Highs 79 to 87. $$ COZ035-191200- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 605 PM MDT Thu Jun 18 2026 .TONIGHT...Partly cloudy. Lows 45 to 55. .JUNETEENTH...Partly cloudy. Highs 75 to 83. East winds 10 to 15 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 46 to 56. .SATURDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 77 to 87. Chance of rain 30 percent. .SATURDAY NIGHT...Mostly clear. Lows 47 to 57. .SUNDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 72 to 82. .SUNDAY NIGHT AND MONDAY...Partly cloudy with a 40 percent chance of thunderstorms. Lows 43 to 53. Highs 71 to 79. .MONDAY NIGHT AND TUESDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows 44 to 54. Highs 71 to 79. .TUESDAY NIGHT...Partly cloudy. Lows 45 to 55. .WEDNESDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 75 to 83. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows 46 to 56. .THURSDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 75 to 85. $$ COZ036-191200- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 49 to 57. .JUNETEENTH...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 75 to 85. East winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .FRIDAY NIGHT...Mostly clear. Slight chance of thunderstorms in the evening. Lows 48 to 58. Chance of precipitation 20 percent. .SATURDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 81 to 91. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .SATURDAY NIGHT...Mostly clear. Lows 48 to 58. .SUNDAY AND SUNDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Highs 75 to 85. Lows 45 to 55. .MONDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 72 to 82. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 46 to 56. .TUESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 71 to 81. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows 47 to 57. Highs 76 to 86. .WEDNESDAY NIGHT...Partly cloudy. Lows 49 to 59. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 77 to 87. $$ COZ030-032-191200- Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- Including Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 38 to 44. .JUNETEENTH...Partly cloudy. Highs 78 to 84. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 40 to 48. Northeast winds 10 to 15 mph in the evening, becoming light. .SATURDAY...Partly cloudy. Highs 77 to 83. Southwest winds 10 to 20 mph with gusts up to 45 mph. .SATURDAY NIGHT...Mostly clear. Lows 38 to 46. .SUNDAY...Mostly sunny. Highs 71 to 77. .SUNDAY NIGHT...Partly cloudy. Lows 36 to 44. .MONDAY...Mostly sunny. Highs 73 to 79. .MONDAY NIGHT...Partly cloudy. Lows 37 to 45. .TUESDAY...Mostly sunny. Highs 77 to 83. .TUESDAY NIGHT...Partly cloudy. Lows 38 to 46. .WEDNESDAY...Mostly sunny. Highs 78 to 84. .WEDNESDAY NIGHT...Partly cloudy. Lows 39 to 47. .THURSDAY...Mostly sunny. Highs 77 to 83. $$ COZ037-191200- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 42 to 48. Southwest winds 10 to 15 mph with gusts up to 30 mph in the evening, becoming light. .JUNETEENTH...Mostly sunny in the morning, then mostly cloudy with a slight chance of thunderstorms in the afternoon. Highs 76 to 82. South winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows 43 to 49. Chance of precipitation 20 percent. .SATURDAY...Partly cloudy with a 20 percent chance of showers. Highs 75 to 83. Southwest winds 10 to 20 mph with gusts up to 40 mph. .SATURDAY NIGHT...Mostly clear. Lows 41 to 47. West winds 10 to 15 mph with gusts up to 40 mph. .SUNDAY...Mostly sunny. Highs 71 to 79. .SUNDAY NIGHT...Partly cloudy. Lows 41 to 47. .MONDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 72 to 78. .MONDAY NIGHT...Partly cloudy. Lows 41 to 47. .TUESDAY...Mostly sunny. Highs 75 to 81. .TUESDAY NIGHT...Partly cloudy. Lows 43 to 49. .WEDNESDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs 76 to 82. .WEDNESDAY NIGHT...Partly cloudy. Lows 43 to 49. .THURSDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 74 to 82. $$ COZ031-033-191200- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Mt Zirkel, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 605 PM MDT Thu Jun 18 2026 .TONIGHT...Partly cloudy. Lows 38 to 46. .JUNETEENTH...Partly cloudy. Highs 67 to 77. West winds 10 to 15 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 40 to 50. Southeast winds 10 to 15 mph in the evening, becoming light. .SATURDAY...Partly cloudy. Highs 67 to 77. Southwest winds 10 to 20 mph with gusts up to 40 mph. .SATURDAY NIGHT...Mostly clear. Lows 38 to 48. West winds 10 to 15 mph with gusts up to 40 mph. .SUNDAY...Mostly sunny. Highs 61 to 71. .SUNDAY NIGHT...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 35 to 45. Chance of rain 30 percent. .MONDAY...Mostly sunny with a 30 percent chance of thunderstorms. Highs 63 to 73. .MONDAY NIGHT...Partly cloudy. Lows 36 to 46. .TUESDAY...Mostly sunny. Highs 66 to 76. .TUESDAY NIGHT...Partly cloudy. Lows 38 to 48. .WEDNESDAY...Mostly sunny. Highs 67 to 77. .WEDNESDAY NIGHT...Partly cloudy. Lows 39 to 49. .THURSDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs 67 to 77. $$ COZ034-191200- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Williams Fork Mountains, and Winter Park 605 PM MDT Thu Jun 18 2026 .TONIGHT...Mostly clear. Lows 39 to 49. Northwest winds 10 to 15 mph with gusts up to 30 mph in the evening, becoming light. .JUNETEENTH...Partly cloudy. Highs 67 to 77. Northwest winds 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 39 to 49. East winds 10 to 15 mph in the evening, becoming light. .SATURDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 66 to 76. West winds 10 to 20 mph with gusts up to 40 mph. .SATURDAY NIGHT...Mostly clear. Lows 37 to 47. West winds 10 to 15 mph with gusts up to 40 mph. .SUNDAY...Mostly sunny. Highs 61 to 71. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows 35 to 45. .MONDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 63 to 73. .MONDAY NIGHT...Partly cloudy. Lows 36 to 46. .TUESDAY...Mostly sunny. Highs 65 to 75. .TUESDAY NIGHT...Partly cloudy. Lows 38 to 48. .WEDNESDAY...Mostly sunny. Highs 66 to 76. .WEDNESDAY NIGHT...Partly cloudy. Lows 39 to 49. .THURSDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs 66 to 76. $$